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EDF Ducted Fan JP Hobby 105mm + 12s Motor 875KV (CCW)


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JP Hobby

Combo 105mm / 12 blade / 875KV (outrunner) / 12S / 550g
> 12S (44.4V) : 114 A / 6.5 kg / 4528 W
> 12S (48.0V) : 130 A / 7.5 kg / 5280 W

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Must have accessories and options


Data sheet

Length (mm):80mm (without motor / Cone)
Weight (gr):550 gr (with motor)
Direction of Rotation (EDF Rotor)Classic Counter Clock Wize (CCW)
EDF Diameter Class (mm):105
EDF Outside Diameter (mm):107 mm
EDF Inner Diameter (mm) :105 mm
Exit Air Diameter (EDF):105 mm
Rotor Diameter (mm):104.5 mm
Turbine shroudMetal
EDF RotorMetal
Power SystemMT-4250-12S
No. of Magnet Poles:12
Turns/min/Volt (Kv):875 Kv
Motor Type:Out-Runner
Motor Diameter (mm):50 mm
Shaft diameter (mm):8
Battery Cells:12s - 44.4v
Connection:PK 5.5mm

More info

EDF Ducted Fan JP Hobby 105mm + 12s Motor 875KV

100% CNC aluminium JP Hobby EDF unit (shroud and rotor) for 12s.

CAUTION: JP Hobby EDF are fitted with specific 12-pole motors compatible with JP Hobby brushless controllers offered as "Must have Accessories" on this page. Only the use of these controllers validates your warranty and ensures the correct functioning of the EDF. JP Hobby EDF are only guaranteed if used with these ESC.


  • Jingpin Hobby uses High grade aluminium alloy material for highest rigid structure and lightest weight.
  • The shroud acts as a heat sink, removing heat from the motor. This design creates a more efficiently running motor and will provide peak performance while extending the lifespan of the motor.
  • The highly rigid structure design is capable of running up to high RPM to produce extremely high efflux velocity for maximum speed and efficiency.
  • Anti Blade flying out design,the Blades be safety kept in the shroud and without damage.It is the best replacement for your plastic or carbon shroud if you want to have a safety EDF fan.
  • Each metal blade is precisely made of High Grade Aluminum alloy to generate jet airflow. Every blade has been tested for 8 hours of metal fatigue test as well as in the dynamic balance machine for calibration, making it bring a better and safer user experience for every RC fan.
  • You could assemble our EDF system with any other motor without losing dynamic balance effect.

The motor and fan unit comes assembled and balanced from the factory.

Note: For a better motor heat dissipation, the manufacturer does not recommend the usage of the motor cone cover wiht the most powerful setups. If you decide to use it, please always make sure to check the motor temperature is not excessive after the first flights.


About the above measures : they have been read on the test bench with the intake lip on the unit. The measures have been made using a bench stabilized power source. Results may changed depening upon your equipment and situation.

 Description / LiPo   12s (44.4v)   12s (48.0v)   
 Thrust:6.5 kg   7.5 kg  
 Current:114 A130 A
 Power:4528 W5280 W
 Recommended ESC:   130 A / HV 150 A / HV 
 Recommended battery:   5000mAh 40C   5000mAh 40C 
The controller should be chosen 20% over rated due to the long lasting load.
LV = low voltage controler up to 6s, HV = high voltage controler above 6s.
Battery should be chosen about 15/ - 1/20 of the max current for 4-3 minutes WOT. 30-40 C is appropriate.
Operating the motor outside of the specifications listed above can either damage the motor, battery or esc. It is important that these components are set up properly. Failure to do so can void the warranty. It is strongly encouraged to use a Watt Meter to test the watt and amp performance when setting up a new system. If the output is above the factory recommended specs, then it needs to be adjusted by the esc. The timing and throttle settings on the esc can help to set the appropriate levels.

Additional measurements with 12s (50.1v):

  • 1kg : 9A
  • 2kg : 21A
  • 3kg : 35A


  • Special high grade aluminum quality
  • Motor Kv: 875
  • Motor: MT-4250-12S (6mm axle) Outrunner 12 poles
  • Motor diameter: 42mm
  • Motor length: 50mm
  • Rotor: 105mm 12 blades aluminium
  • External diameter: 107mm
  • Internal diameter: 105mm
  • Inlet ring diameter: 123mm (removable)
  • Ejection diameter: 105 mm
  • Combo max thrust: 7.5Kg
  • Weight: 550g (combo EDF + lip + motor )
  • Max efficiency: 90 %
  • Recommended max. rotation speed: 75600
  • Speed Control Advanced Timing Setting: 15° and under
  • Connections: Banana / PK 5.5mm (in place)


  • 1x JP Hobby 12s 105mm full metal EDF unit


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EDF Ducted Fan JP Hobby 105mm + 12s Motor 875KV (CCW)

EDF Ducted Fan JP Hobby 105mm + 12s Motor 875KV (CCW)

Combo 105mm / 12 blade / 875KV (outrunner) / 12S / 550g
> 12S (44.4V) : 114 A / 6.5 kg / 4528 W
> 12S (48.0V) : 130 A / 7.5 kg / 5280 W


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